Secondary nucleus in middle of an embryo sac of angiosperms is

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1.Sexual Reproduction in Flowering Plants

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Secondary nucleus in the middle of an embryo sac of angiosperms is

A

Diploid

B

Triploid

C

Tetraploid

D

Haploid

(AIEEE-2003)

Solution

(a)Secondary nucleus of an embryo sac of angiosperms is diploid because two nucleus comes from each pole to the middle and they becomes fuse.

Standard 12

Biology

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Two nuclei with one cell are found in

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What is not correct about megasporogenesis ?

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What is the direction of micropyle in anatropous ovule

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(AIPMT-2002)

In angiosperms, the following events occur during megasporogenesis and megagametogenesis

$(i)$ Differentiation of megaspore mother cells

$(ii)$ Meiosis of the megaspore mother cell

$(iii)$ Formation of a linear tetrad

$(iv)$ Mitotic division of the functional megaspore

$(v)$ Degeneration of 3 megaspores

$(vi)$ Formation of embryo sac

$(vii)$ Fusion of polar nuclei

The correct sequence is

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Synergids are

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